2013. — 9 с.The new IEC 61850 international standard for substation and power system communications is not just defining a new protocol, but also introducing abstract models of primary and secondary substation equipment, communications systems and the relationship between all of them. It also defines an XML based format for the description of the above in a standard way that can be used at different stages of the engineering process based on an object oriented approach.
The model used in the substation configuration language is based on the Unified Modeling Language (UML). The different UML diagrams are described with the focus being placed on the ones used by the SCL.
The paper then introduces the different components of the substation model:
Substation: the part that describes the substation primary equipment and their connection on a single line diagram level
IED: represents the functional hierarchy of multifunctional IEDs used at different levels and for different applications in the substation automation system
Communication: the part that contains communication related object types such as communication access points and describes the communication connections between logical nodes as clients and servers
The different types of SCL files are then introduced:
ICD for IED Capability Description.
SSD for System Specification Description.
SCD for Substation Configuration Description.
CID for Configured IED Description.
The SCL based engineering process is described later in the paper. The use of SSD and ICD files to form SCD files, the differences between ICD and CID files are discussed.
